Tufted perennial with dimorphous culms; sterile culms 40-65 cm. high, strigose below the nodes; lower sheaths much shorter than the internodes, strigose, the upper ones overlapping but not crowded, not fimbriate in the mouth; ligule truncate, about 2 mm. long; blades 2-3 at the summit of the culms, not crowded, ovate to ovate-lanceolate, acuminate, 12-15 cm. long, 4.5-5.3 cm. wide, scabrous at the tip and on the margins, grayish-green above, glaucous below; fertile culms about 45 cm. high, weak, soft, bladeless; spike 7 cm. long; staminate spikelets: pedicels 2-3 mm. long, villous at the base; glumes 4-5 mm. long, 1-nerved, narrow, acuminate; lemma 5-6 mm. long, oblong, abruptly subacute, tinged with purple; fertile spikelet: glumes 6 mm. long, 1-nerved, acute, thin, pubescent; fruit 5 mm. long, ovate, abruptly subacute.
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